public function percentage()
 {
     $addWord_possibility = Input::get('addWord_possibility');
     $addword_percentage = Input::get('addword_percentage');
     $conversion_rate = Input::get('conversion_rate');
     $objective_amount = Input::get('objective_amount');
     $average_order = Input::get('average_order');
     $budget_percentage = Input::get('budget_percentage');
     $paid_percentage = Input::get('paid_percentage');
     $direct_percentage = Input::get('direct_percentage');
     $google_percentage = Input::get('google_percentage');
     $unpaid_percentage = Input::get('unpaid_percentage');
     $addWord_possibility_text = Calculation::addwords_possibility_text($addword_percentage, $addWord_possibility, $conversion_rate, $objective_amount, $average_order);
     $add_word_visitors = Calculation::add_words_visitors($addword_percentage, $conversion_rate, $objective_amount, $average_order);
     $budget_cpc = Calculation::budget_per_visitor($objective_amount, $budget_percentage, $conversion_rate, $paid_percentage, $addword_percentage, $average_order);
     $bought_visitors = Calculation::bought_visitors($conversion_rate, $paid_percentage, $addword_percentage, $objective_amount, $average_order);
     $remaining_percentage = Calculation::remaining($direct_percentage, $google_percentage, $addword_percentage, $paid_percentage, $unpaid_percentage);
     $together_paid_percentage = Calculation::paying_sites_together($paid_percentage, $addword_percentage);
     $return = array("addWord_possibility_text" => $addWord_possibility_text, "add_word_visitors" => $add_word_visitors, "budget_cpc" => $budget_cpc, "bought_visitors" => $bought_visitors, "remaining_percentage" => $remaining_percentage, "together_text_percentage" => $together_paid_percentage);
     echo json_encode($return);
 }